Strawberries and Cream: Part 1 - S3-E23
Plot hole: In the heat of killing fake Red John, Jane forgot to notice that Craig O'Laughlin never knew about the mall setup to lure Red John. So definitely Gale Bertram himself was in contact with the serial killer which he may have missed first up, but all that time in jail afterwards he could have figured it out.
Strawberries and Cream: Part 2 - S3-E24
Continuity mistake: In S03E10 Patrick Jane obtains Laroche's suspect list "through back channels" from Virgil Minelli. In this episode Patrick Jane obtains Laroche's suspect list again, through bluffing with what Laroche is hiding in his safe.
Orange Blossom Ice Cream - S7-E3
Continuity mistake: In the meeting they said Erica Fline broke out of jail a year ago, but that occurred three years previously. (00:01:53)
Green Thumb - S6-E10
Character mistake: When Kim is trying to convince Lisbon to help the FBI on their case, she says Jane stopped the ten-year reign of a mass murderer. Red John was a serial killer, which, by the FBI's definition, is a criminal behavior distinctly different from mass murder; he may have had a large number of victims, but he killed them either one or a couple at a time, with a cooling-off period in between, not all at once.
Factual error: The container for the dangerous biological material is marked "Biohazard Level 5." There is no level 5. According to CDC regulations Biohazardous materials are rated 1 through 4. Based on the description of the material in the episode, it would be required to be stored in a laboratory rated at Biosafety Level (BSL) 4. All BSL 4 labs require personnel to wear a fully enclosed, pressurized suit when inside the lab. (00:01:05)
So Long, and Thanks for All the Red Snapper - S4-E22
Continuity mistake: Cho opens the vent with a screwdriver and hands it back to the landlord (who pockets it). In the next shot Cho has it in his hand again finding the hidden drugs. (00:10:00)
Factual error: Lisbon is sending Van Pelt to El Oro State Forest. Van Pelt says, "El Oro State Forest, that's east of Lake Tahoe, right?" Lisbon says, "Yeah." East of Lake Tahoe is Nevada, not California. (00:01:17)
Factual error: When Jane is changing the tire on his Citroen DS 20 he uses a car-jack, but because of that car's hydropneumatic suspension you don't need one. (00:00:19)
Suggested correction: Good one! The DS 20 is a fantastic car and you CAN use the high-lift suspension to lift the car up to change the tire, but you still need the jack stand - supplied in the Citroen kit - to keep the tires off the ground for changing. Most DS owners find it much easier to just use a regular jack.
Other mistake: Bob Kirkland shouldn't be in the Red John list, because when Luralie told Jane that he shook hands with Red John he hadn't yet met Bob Kirkland.
Character mistake: During the Texas Hold 'Em poker game, George Holiday says, "What do we have on 4th street here?" But there is no 4th street in Hold 'Em. That's a term for a stud variant game when the 4th card is dealt.
Continuity mistake: When Cho finds Archie's notebook under the bed, he turns to near the end and starts reading Archie's entry. But the position of where Cho has the notebook open changes, depending on the camera angle.
Continuity mistake: At the end, when Grace and Rigsby kiss, they separate and Grace says she's going to leave. In the next shot, their foreheads are touching.
Continuity mistake: When we first see Rigsby interview Lindsay, she says "Royston would never hurt Mary Beth. Not in a million years, if that's what you're thinking." Later in the episode when this scene is shown again in flashback, she says "Royston would never hurt Mary Beth if that's what you're thinking, not in a million years."
Continuity mistake: Jane ordered the leather couch he is later seen napping on for the office in a previous season when he made a deal to be able to get a couch (only upper-level officers were allowed to have couches). Since this episode was a flashback to the first time Jane met and worked with the team, the couch he falls asleep on would not have been there, as that event had not yet happened.
Orange Blossom Ice Cream - S7-E3
Revealing mistake: Right after Jane and Lisbon rumble Erica Flynn and send video of her being arrested back to the FBI, Cho enters and asks to speak with Vega. In the shot of Vega sitting down, one of the computers in the office (centre of frame) has an Apple logo on the back that the production team forgot to cover up with a sticker like all the others.